
William TrubridgeMNZM (born 24 May 1980) is a New Zealand world champion and former world record holdingfreediver.
Trubridge was the first diver to go deeper than 100 metres (330 ft) without fins and held the world record in thefree immersion discipline from 2010-2018 andconstant weight without fins discipline from 2010-2025.[1]
Trubridge was born inNorthumberland in northernEngland,[2] but moved with his family to New Zealand when he was eighteen months old.[3] He was educated atHavelock North High School.[4]
As a diver, Trubridge mainly competes in depth disciplines. He has scored the highest number of points for an individual at the Team's World Championships, 313.3, which he achieved at the 2010 Freediving Team's World Championships held inOkinawa, Japan.
On 18 January 2011, Trubridge won theWorld's Absolute Freediver Award (WAFA), as the best all around freediver, with the highest combined score in six freediving disciplines:static apnea,dynamic apnea with fins, dynamic apnea without fins (pool disciplines), constant weight apnea with fins, constant weight without fins, and free immersion (depth disciplines).
Trubridge is anApnea Academy instructor and as of 2013[update] operated a freediving school and annual competition, both calledVertical Blue, atDean's Blue Hole inLong Island, Bahamas from September to May. During the summer he teaches courses in Europe and has trained at the Tenerife Top Training Center.
Trubridge was the main subject of a documentary entitled "Breathe" directed by Martin Khodabakhshian, which documents Trubridge's pursuits in 2010 to become the first free diver ever to reach 300 feet with a single breath in the discipline of constant weight no fins.[5]
On 15 February 2019 Trubridge became the first man to complete an 'underwater crossing' of one of the major channels, swimming across theCook Strait as a series of 934 breath hold dives. He wore fins and swam with a dolphin kick horizontally underwater at a depth between 3–5 meters, surfacing only for short recoveries during which he remained immobile. The crossing took 9 hours 15 minutes and was done to raise awareness of the plight of New Zealand'sHector's andMāui dolphins, which are both threatened with extinction due predominantly to over-fishing in their ranges.

In the2021 New Year Honours, Trubridge was appointed aMember of the New Zealand Order of Merit, for services to free diving.[6]
On May 26, 2025, in Sharm El Sheikh, Croatian athlete Petar Klovar ended Trubridge’s 17-Year Legendary Reign dominating the CNF discipline with a unassisted dive to 103m without fins.
| Discipline | Result | Accreditation | |
|---|---|---|---|
| Time | STA | 7:29min | AIDA |
| Distance | DNF | 187m | AIDA |
| DYN | 237m | AIDA | |
| Depth | CNF | 102m | AIDA |
| CWT | 121m | AIDA | |
| CWT BF | CMAS | ||
| FIM | 124m | AIDA | |
| VWT | |||
| NLT | |||
| Team | 313.3pts | AIDA | |